I bought one of these 2 years ago and it works great and was reasonably priced. I have had a few club members ask me about it so I thought I would post the info. I liked this one because it would work on 1 cell as well as 2 to 8. I had to make a cable for testing one cell batteries. For 3 cell and up you can plug your battery balance cable directly into it. For 2 cell I use the balance adapter cable I already had for charging. It displays % battery charge and also voltage of each cell.

The one in the link below looks like it may come with the 1 cell adapter cable. I do not use the alarm that comes with it.